Sample
verify pkg:golang/golang.org/x/exp@v0.0.0-20251023183803-a4bb9ffd2546
sha256:4f8750cf652718fc27cfb2e74f20593e1fb969210d69c3447a2c0580e12e337e
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
go 1.26 linux 24 · ubuntu · glibc 2.39 x64 go 1.26 go go 1
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f… |
2026-08-28 |
Case
HOW- Goal
- verify pkg:golang/golang.org/x/exp@v0.0.0-20251023183803-a4bb9ffd2546
- Environment
- go 1.26.6
- Created
- 2026-08-28T10:36:38Z
Contract
- utf8string.NewString creates a String wrapper and String() returns the underlying UTF-8 string
- String.RuneCount reports the number of Unicode code points rather than byte count
- String.IsASCII reports true for ASCII-only strings and false for multi-byte Unicode strings
- String.At retrieves the rune at the specified code point index with correct multi-byte decoding
- String.Slice extracts substrings by rune boundary indices [i:j]
- String.Init resets and initializes an existing String instance with new contents
- String.At and String.Slice panic on invalid out-of-range index arguments
Files
- PROMPT.md
- contract_test.go
- csx.json
- go.mod
- go.sum
- spec.json
Origin Seeder
anonymous